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Annotation of gcc/va-m88k.h, revision 1.1.1.2

1.1       root        1: /* GNU C varargs support for the Motorola 88100  */
                      2: 
1.1.1.2 ! root        3: /* Define __gnuc_va_list.  */
        !             4: 
        !             5: #ifndef __GNUC_VA_LIST
        !             6: #define __GNUC_VA_LIST
1.1       root        7: 
                      8: typedef struct
                      9: {
                     10:   int  __va_arg;               /* argument number */
                     11:   int *__va_stk;               /* start of args passed on stack */
                     12:   int *__va_reg;               /* start of args passed in regs */
1.1.1.2 ! root       13: } __gnuc_va_list;
        !            14: #endif /* not __GNUC_VA_LIST */
1.1       root       15: 
1.1.1.2 ! root       16: /* If this is for internal libc use, don't define anything but
        !            17:    __gnuc_va_list.  */
        !            18: #if defined (_STDARG_H) || defined (_VARARGS_H)
1.1       root       19: 
                     20: #ifdef _STDARG_H /* stdarg.h support */
                     21: 
                     22: #if __GNUC__ > 1 /* GCC 2.0 and beyond */
1.1.1.2 ! root       23: #define va_start(AP,LASTARG) ((AP) = *(__gnuc_va_list *)__builtin_saveregs())
1.1       root       24: #else
                     25: #define va_start(AP,LASTARG) \
                     26:   ( (AP).__va_reg = (int *) __builtin_saveregs2(0), \
                     27:     (AP).__va_stk = (int *) __builtin_argptr(), \
                     28:     (AP).__va_arg = (int) (__builtin_argsize() + 3) / 4 )
                     29: #endif
                     30: 
                     31: #else /* varargs.h support */
                     32: 
                     33: #if __GNUC__ > 1 /* GCC 2.0 and beyond */
1.1.1.2 ! root       34: #define va_start(AP) ((AP) = *(__gnuc_va_list *)__builtin_saveregs())
1.1       root       35: #else
                     36: #define va_start(AP) \
                     37:   ( (AP).__va_reg = (int *) __builtin_saveregs2(1), \
                     38:     (AP).__va_stk = (int *) __builtin_argptr(), \
                     39:     (AP).__va_arg = (int) (__builtin_argsize() - 4 + 3) / 4 )
                     40: #endif
                     41: #define va_alist __va_1st_arg
                     42: #define va_dcl register int va_alist;
                     43: 
                     44: #endif /* _STDARG_H */
                     45: 
1.1.1.2 ! root       46: /* Avoid trouble between this file and _int_varargs.h under DG/UX.  This file
        !            47:    can be included by <stdio.h> and others and provides definitions of
        !            48:    __va_size and __va_reg_p and  a va_list typedef.  Avoid defining va_list
        !            49:    again with _VA_LIST.  */
        !            50: #ifdef __INT_VARARGS_H
        !            51: #undef __va_size
        !            52: #undef __va_reg_p
        !            53: #define __gnuc_va_list va_list
        !            54: #define _VA_LIST
        !            55: #else
        !            56: /* Similarly, if this gets included first, do nothing in _int_varargs.h.  */
        !            57: #define __INT_VARARGS_H
        !            58: #endif
        !            59: 
1.1       root       60: #define __va_reg_p(TYPE) \
                     61:   (__builtin_classify_type(*(TYPE *)0) < 12 \
                     62:    ? sizeof(TYPE) <= 8 : sizeof(TYPE) == 4 && __alignof__(TYPE) == 4)
                     63: 
                     64: #define        __va_size(TYPE) ((sizeof(TYPE) + 3) >> 2)
                     65: 
1.1.1.2 ! root       66: /* We cast to void * and then to TYPE * because this avoids
        !            67:    a warning about increasing the alignment requirement.  */
        !            68: #define va_arg(AP,TYPE)                                                           \
1.1       root       69:   ( (AP).__va_arg = (((AP).__va_arg + (1 << (__alignof__(TYPE) >> 3)) - 1) \
1.1.1.2 ! root       70:                     & ~((1 << (__alignof__(TYPE) >> 3)) - 1))             \
        !            71:     + __va_size(TYPE),                                                    \
        !            72:     *((TYPE *) (void *) ((__va_reg_p(TYPE)                                \
        !            73:                          && (AP).__va_arg < 8 + __va_size(TYPE)           \
        !            74:                          ? (AP).__va_reg : (AP).__va_stk)                 \
        !            75:                         + ((AP).__va_arg - __va_size(TYPE)))))
1.1       root       76: 
                     77: #define va_end(AP)
1.1.1.2 ! root       78: 
        !            79: #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */

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